Jump to main content
Jump to site search


Empirical Study of Physicochemical and Spectral Properties of CuII-Containing Chelate-Based Ionic Liquids

Abstract

The physicochemical properties including melting point, density, viscosity, conductivity, and surface tension as well as spectral properties such as infrared and EPR spectra of the chelate-based ILs [Cnmim][Cu(F6-acac)3] (n = 6, 8, 10, 12, 14) were studied as functions of temperature and chain length. The thermodynamic properties such as the standard molar entropy and crystal energy were estimated by Glasser’s theory, the molar enthalpy of vaporization was calculated by Kabo’s method, and the ionicity was estimated by the Walden rule. Compared with the common ILs, the chelate-based ILs have larger molecular volume, larger density, smaller crystal energy, poorer ionicity and larger enthalpy of vaporization. The infrared spectra data of the ILs showed a red shift of C-H bonds stretching vibration of the alkyl chain in the cation and the EPR spectra showed that the crystal field of Cu2+ was kept when the chain length elongated, which indicated the existence of microphase separation in the ILs. This work is helpful in understanding of structure–property relations of chelate-based ILs for further application.

Back to tab navigation

Supplementary files

Publication details

The article was received on 25 Nov 2017, accepted on 04 Jan 2018 and first published on 06 Jan 2018


Article type: Paper
DOI: 10.1039/C7CP07933H
Citation: Phys. Chem. Chem. Phys., 2018, Accepted Manuscript
  •   Request permissions

    Empirical Study of Physicochemical and Spectral Properties of CuII-Containing Chelate-Based Ionic Liquids

    H. Wei, Y. Wang, J. Yao and H. Li, Phys. Chem. Chem. Phys., 2018, Accepted Manuscript , DOI: 10.1039/C7CP07933H

Search articles by author

Spotlight

Advertisements